Constructional material



Patented Jan. 13, 1931 UNITED sra'ras rarest creme ALBERT C. FISCHER, OF CHICAGO, ILLINOIS, ASSIGNOB TO THE yHILIL CAREY MANU- FAUTURING COMPANY, A CORPORAT'IGN 0F QHIU CONSTRUCTIONAI: MATERML No Drawing.

This invention relates to constructional material, such as, roofin material, insulating material, tapes, shingles, packing and the like.

The object of my present invention is to provide such constructional materials with an adhesive coating which is normally sticky or tacky to the touch and which lastingly maintains this mastic condition whereby the material may be packed and stored for long periods of time without losing its tackiness and may be transported to its place of installation and used in such tacky condition without further treatment.

A further object of my invention resides in the application of this normally lastingly ad-, hesive, sticky to the touch, to sheets or strips of carrier material, hereinafter called vehicles, so that when rolled into package form or placed face to face in contact with a similar sheet for packing and storing and transportation, they may be unrolled or pulled apart readily without tearing or damaging, and can be installed in tacky condition; in this instance the tacky coating permits the facile separation of the contacting vehicle surfaces, the line of cleavage passing through the mastic itself. The vehicle thus provided with a lasting adhesive, mastic coating is particularly adapted to act as a packing for various types of installations, not only because of the waterproofing quality of the:

mastic but also because of its pronounced and lasting-quality of adhesiveness and fur ther because of its plasticity.

A further object of the present invention resides in the utilization of means for maintaining or insuring the lasting quality of the adhesive by saturating the vehicle with an oil and particularly a non-drying oil which not only prevents the oil contained in the adhesive coating frompenetrating too far into the vehicle and being absorbed, which detracts from the tackiness of the coating, but also which serves slowly to unite, or in .the use of other oils not to unite, with the oil with which the substance of the coating 1s fiuxed, whereby to maintain the coating in its normal, tacky, mastic condition, sticky Application filed August 15, 1927. Serial Ho. males.

consist of sheets, strips, or slabs of tar paper, felt, fabric, fibers or other preferred material.

The saturant for the vehicle consistsoi an oil or combination of oils. 1 preferably, in the present application, saturate the vehicle with a non-dryingoil, such as, cotton seed oil, rape seed 0il,castor oil or'other similar oil in treated or untreated form.

The oil acts as a waterproofing filler for the vehicle. The vehicle saturated with this nondrying oil may then have applied thereto an adhesive, which may be of any preferred kind. The fact that the vehicle is saturated with the oil will prevent the deep penetra tion of the adhesive into the body of the vehicle andat the same time the oil will prevent the drying out of the adhesive, whereby said adhesive will continue for long periods of time in its mastic state, tacky to the touch.

The saturant of the vehicle forms a slow union of junction with the'coating of bituminous matter which contains or is fiuxed with an oil or oils that will unite with the saturant of the vehicle.

Alternatively, in some instances the coating of bituminous material is fluxed with mineral oil, which will not unite with the saturant of thejvehicle.

The tendency of the saturant is to keep the bituminous material of the coating in a thoroughly mastic state where the substances will unite, and in a pliable, soft, state where they do not unite. e

Castor oil may be used as a saturant for the vehicle where the coating materials contain mineral oils and where no union of the oil of the saturant and the oil of the coating is desired. The coating material may be a high melting point bituminous substance with mineral oils, or the coating may be any combination of flux oils, mineral, vegetable or animal oils.

The coating with which the vehicle is thus saturatedon either one or both sides preferably comprises a slow drying, tacky bituminous, vegetable or animal substance or combination. of two or more; which approximates the following specifications, or may be more or less fluid.

1. The consistency at 77 degrees F. should be below 7.0.

2. The susceptibility factor should be as low as possible, preferably under 25.

3. The ductility at 77 degrees F. should be as high as possible and preferably over 25 centimeters.

l. Fusing point by K & S method should be between 80 degrees and degrees F.

5. It should appear tacky and adhesive at normal temperature and retain this property as long as possible on exposure to air.

This formula is merely a standard and other formulas more or less fluid may be used with or without a suitable filler as a flow retarder, or the flow tendency may be stopped by using a non-flowing gummy substance in combination.

It will be understood that my invention contemplates constructional material, the adhesiveness of which serves to hold said mate rial in place in distinction to other materials which involve the use of pitch, or other material, mopped on at the time of assembling the material. This is especially true in the application of the invention to roofingsheets, for the purpose of holding the sheets of roofing material in place. It will be understood that after two sheets of building material according to the present invention have been separated, the adhesive surface of one sheet will be place in contact with the non-adhesive surface of another sheet. The adhesive or mastic will cause a union with non-adhesive surfaces to which it is applied, which union may be made very excellent by means of rolling and which will improve in the course of time.

It will also be understood that if it should be found that the adhesive surface of a sheet should become dried out, a solvent such as toluol, henzol, kerosene, or cotton oil, may be used to bring the sheet back into adhesive state.

The subject matter of this case has been withdrawn from my Patent, No. 1,550,310, issued August 18, 1925.

I claim:

1. A vehicle saturated with an oil and coated with a mastic of lasting adhesiveness, sticky to the touch.

2. A vehicle saturated with a non-drying oil and coated with a mastic of lasting adhesiveness and sticky to the touch.

3. Constructional material comprising a vehicle saturated with an oil and coated with a waterproofing mastic of lasting adhesive ness fluxed with. an oil which forms a slow union with the vehicle saturant.

l. Constructional material comprising a vehicle saturated with an oil and coated with a bituminous mastic, the oil saturant servweaess August 1927.

ALBERT FISCHER. 

